Chaise Longue Elastic Joint for Adjustable Low-Wear Seating
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Solution Overview
Problem
Existing chaise longue designs are not easily adjustable during use and have complex structures with many movable parts, leading to high production costs and potential wear, which affects durability and user comfort.
Innovation Solution
A chaise longue with a robust and simple design featuring an elastic joint and rotatable mounting devices with balance springs, allowing for easy adjustment and reduced wear, utilizing a conical elastic polymeric material hinge for smooth operation and low maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple rotatable joints and slides are used to enable angle adjustment, then the chaise longue becomes adjustable, but the structure becomes complex with many movable parts leading to wear and high production costs
Solution Approach 1:
The patent extracts the complex mechanism of multiple rotatable joints and slides, replacing it with a single elastic joint that provides the necessary adjustment functionality. This simplifies the structure by removing unnecessary movable parts while maintaining the ability to adjust the backrest angle relative to the seat.
Solution Approach 2:
The patent changes the physical state of the joint from rigid and mechanical to elastic and flexible. By using an elastic joint, the system achieves angle adjustment through material deformation rather than mechanical movement, reducing complexity and wear.
2Adaptability or versatility
If multiple movable parts are used for adjustment, then the chaise longue can be reconfigured, but production costs increase due to the complexity of the design
Solution Approach 1:
The patent removes the complex assembly of multiple components (joints, slides, locks) and replaces it with a single elastic joint. This dramatically simplifies the manufacturing process, reducing the number of parts to produce, assemble, and quality-check, thereby lowering production costs.
Solution Approach 2:
The patent combines multiple functions (adjustment, locking, support) into a single elastic joint component. This consolidation reduces the total number of parts and simplifies the manufacturing process, making production more cost-effective.
3Ease of manufacture
If a simple design with fewer parts is used, then production costs are lower and the design is more robust, but the ability to adjust during use is reduced
Solution Approach 1:
The patent utilizes the elastic properties of the material to enable adjustment. The elastic joint can deform under applied force to allow angle changes, then returns to its original shape to maintain the new position, providing adjustability without requiring complex mechanical components.
Solution Approach 2:
The elastic joint automatically provides both adjustment and locking functions without requiring separate mechanisms. When force is applied, the elastic material deforms to allow movement; when the force is removed, the elastic recovery maintains the new position, eliminating the need for locks or brakes.
4Adaptability or versatility
If conventional hinges and slides are used, then the chaise longue can adjust angles, but wear of the joint increases reducing durability
Solution Approach 1:
The patent replaces the mechanical system of rigid joints and slides with an elastic material-based system. This substitution eliminates friction, impact, and mechanical wear associated with traditional joints, significantly improving durability and reliability.
Solution Approach 2:
The patent employs elastic polymeric materials that combine flexibility and strength. These materials provide the necessary adjustment capability while resisting wear and degradation, enhancing the overall durability of the chaise longue.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a durable, cost-effective, and comfortable seating arrangement that can be easily adjusted by redistributing body mass, maintaining comfort and reducing wear, while minimizing production costs and enhancing user experience.
Implementation Method 1
an elastic joint (15) made of a polymeric material with elastomeric properties; the elastic joint (15) is arranged between the seat (4) and the backrest (3)
Implementation Method 2
rotatable mounting devices 8a, b... in combination with blance springs 14
Implementation Method 3
The mounting device is preferably not provided with a lock or adjustable brake, as the tilt is confined by the mounting mechanism and the placement of this, in combination with blance springs 14
Data Source
AI summary
Chaise longue comprising a sofa frame (2), seat part (4) and back rest (3). The seat part (4) comprises side bars (9a, b), cross bars (10a, b) and seat springs (7). The seat part (4) is rotatably connected to the sofa frame (2) by means of mounting devices (8a, b) below the sitting surface of the seat part. One or more balance springs (14) are arranged between the seat part (4) and the sofa frame (2). A shutter or flap (16) is rotatably mounted to the seat part with pivotable joints (17a,b). The flap is furthermore rotatably connected to the sofa frame in point at the opposite end from the joints.